Added simple process state monitor source.

homeassistant/bootstrap.py

@@ -134,6 +134,13 @@ def from_config_file(config_path):
 
         add_status("WeMo", wemo.setup(bus, statemachine))
 
+    # Process tracking
+    if has_section("process"):
+        process = load_module('process')
+
+        kwargs = dict(config.items('process'))
+        add_status("process", process.setup(bus, statemachine, **kwargs))
+
     # Light control
     if has_section("light.hue"):
         light = load_module('light')

homeassistant/components/process.py

@@ -0,0 +1,59 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# -*- Python -*-
+#
+# $Id: process.py $
+#
+# Author: Markus Stenberg <fingon@iki.fi>
+#
+# Copyright (c) 2014 Markus Stenberg
+#
+# Created:       Wed Apr 23 23:33:26 2014 mstenber
+# Last modified: Wed Apr 23 23:48:13 2014 mstenber
+# Edit time:     13 min
+#
+"""
+
+Process watcher.
+
+The arguments are <subentityname>=<substring to find in process list>
+
+"""
+
+import homeassistant as ha
+from homeassistant.components import (STATE_ON, STATE_OFF)
+import os
+
+DOMAIN = 'process'
+ENTITY_ID_FORMAT = DOMAIN + '.{}'
+
+PS_STRING='ps awx'
+
+INTERVAL=30
+
+def setup(bus, statemachine, **processes):
+    _states = {}
+
+    def _update_process_state(t, force_reload=False):
+        with os.popen(PS_STRING, 'r') as f:
+            lines = list(iter(f))
+            for e, s in processes.items():
+                found = False
+                for line in lines:
+                    if s in line:
+                        found = True
+                        break
+                if _states.get(e, None) == found:
+                    continue
+                _states[e] = found
+                entity_id = ENTITY_ID_FORMAT.format(e)
+                state = found and STATE_ON or STATE_OFF
+                statemachine.set_state(entity_id, state)
+
+    _update_process_state(None, True)
+    kwargs = {}
+    if INTERVAL != ha.TIMER_INTERVAL:
+        kwargs['second'] = [0, INTERVAL]
+        assert INTERVAL > ha.TIMER_INTERVAL
+    ha.track_time_change(bus, _update_process_state)
+    return True